Results 211 to 220 of about 170,252 (259)
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On the GDOP and Accuracy for Indoor Positioning
IEEE Transactions on Aerospace and Electronic Systems, 2012Position accuracy and geometric dilution of precision (GDOP) analysis are presented for indoor mesh positioning systems in multipath and non-line-of-sight (NLOS) propagation environments. Concise analytical formulas are derived for the position error statistics in the presence of biased ranging errors and uniform random spatial anchor node deployment ...
Ian Sharp, Kegen Yu, Mark Hedley
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Accuracy in Horizontal Arm Positioning
Research Quarterly. American Association for Health, Physical Education and Recreation, 1971Abstract The effects of holding interval and extent of angular displacement upon accuracy in horizontal arm positioning were investigated. Fifteen right-handed female subjects, aged 21 to 41, were individually administered 15 arm positions on one day.
P D, Rey, J, Lichter
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Accuracy of position detection using a position-sensitive detector
IEEE Transactions on Instrumentation and Measurement, 1998Position-sensitive detectors (PSD) provide four current outputs that are proportional to the two-dimensional center of mass of a light spot impinging on the face of the detector. This characteristic permits the PSD to be used for sensing the position of a light source.
Peter Schaefer +3 more
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Bicycle GPS Positional Accuracy
SAE Technical Paper Series, 2021<div class="section abstract"><div class="htmlview paragraph">Bicycle riders increasingly utilize bicycle computers or cell phones equipped with GPS positioning to track and share their rides. These bicycle computers and online platforms typically contain a wealth of ride-specific information, such as speed, location, heart rate, pedaling ...
Elvis Desai +3 more
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Distance and positioning accuracy for robotic manipulators
Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'94), 2002This research concerns the relationship between distance accuracy and positioning accuracy for robotic manipulators. We propose an approach for calibration and verification of the positioning accuracy based on a polynomial approximation to the workspace.
Xuecai Zhou +3 more
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Positional Accuracy of Two Methods of Geocoding
Epidemiology, 2005Geocoding is often used in epidemiologic studies to map residences with geographic information systems (GIS). The accuracy of the method is usually not determined.We collected global positioning system (GPS) measurements at homes in a case-control study of non-Hodgkin lymphoma in Iowa. We geocoded the addresses by 2 methods: (1) in-house, using ArcView
Mary H, Ward +8 more
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Accuracy of maxillary positioning in bimaxillary surgery
British Journal of Oral and Maxillofacial Surgery, 2009The aim of the study was to investigate the accuracy of a modified pin system for the vertical control of maxillary repositioning in bimaxillary osteotomies. The preoperative cephalograms of 239 consecutive patients who were to have bimaxillary osteotomies were superimposed on the postoperative films.
W B, Kretschmer +4 more
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Enhancing Accuracy Performance of Bluetooth Positioning
2007 IEEE Wireless Communications and Networking Conference, 2007Huge popularity of mobile devices and Internet open new application field of wireless positioning and navigation systems, and this integration also brings new research issues. Currently the positioning and navigation systems are mostly based on satellite positioning systems, such as GPS.
Le Thanh Son, Pål Orten
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Effect of distance metrics on positioning accuracy
2018 26th Signal Processing and Communications Applications Conference (SIU), 2018RF fingerprinting based positioning systems have come to the forefront among indoor positioning systems as they provide both high precision and can use existing infrastructure like Wi-Fi access points effectively. In this study, an architecture that constructs the RF signal map of the environment in real-time is proposed.
Umut Can Altin, Nuray At, Cihan Topal
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Accuracy of Stereotaxic Positioning of Transcranial Magnetic Stimulation
Brain Topography, 2005In cognitive neuroscience, optically tracked frameless stereotaxic navigation has been successfully used to precisely guide transcranial magnetic stimulation (TMS) to desired cortical areas for brain-mapping purposes. Thereby, potential sources of imprecision are the fixation of a reference frame to the head of the subject and the referencing procedure
Schönfeldt-Lecuona, C +5 more
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